Patent US568323A successfully refreshed from Google Patents.
US568323A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of graphite
Assignee: —
•
Filing: —
•
Granted: 1896-09-29
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Expires: 1913-09-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:26
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/528; C04B35/532; C01; C01B; C01B32/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1899-09-29 | 1900-03-31 | 1900-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1903-09-30 | 1904-03-31 | 1904-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1907-09-30 | 1908-03-31 | 1908-09-30 | $7700.00 | Window Closed / Lapsed |